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Field
Selected
GPT-5.3 Chat
openai/gpt-5.3-chat
OrganizationOpenAI
FamilyGPT
Released2026-03-03
Context window128K
Max output16K
Modalities
DocumentInputImageInputTextInputTextOutput
ProvidersLLM Gateway, Abacus, OrcaRouter, Merge Gateway, OpenAI, OpenRouter, ZenMux, Kilo Gateway, Vercel AI Gateway
WeightsClosed
Attachments
Native
Reasoning-
Tool call
Native
Parameters: tools, tool_choice
Structured
Native
Parameters: structured_outputs, response_format
Temperature
Native
Parameters: temperature
Open weight-
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